Pulmonary function tests (PFTs) are a group of tests that measure how well your lungs work. This includes how well you’re able to breathe and how effective your lungs are able to bring oxygen to the rest of your body.
Your doctor may order these tests:
- if you’re having symptoms of lung problems
- if you’re regularly exposed to certain substances in the environment or workplace
- to monitor the course of chronic lung disease, such as asthma or chronic obstructive pulmonary disease (COPD)
- to assess how well your lungs are working before you have surgery